Stapler



FIG. 1 is a right side elevational view of a stapler showing my newdesign;

FIG. 2 is a left side elevational view;

FIG. 3 is a top plan view;

FIG. 4 is a front elevational view; and

FIG. 5 is a rear elevational view.

The ornamental design for a stapler, as shown and described.